A search for the production of three Higgs bosons (HHH) in the b (b) over barb (b) over barb (b) over bar final state is presented. The search uses 126 fb(-1) of proton-proton collision data at root s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant production of HHH. The resonant interpretations primarily consider a cascade decay topology of X -> SH -> HHH with masses of the new scalars X and S up to 1.5 and 1 TeV, respectively. In addition to scenarios where S is off-shell, the nonresonant interpretation includes a search for Standard Model HHH production, with limits on the trilinear and quartic Higgs self-coupling set. No evidence for HHH production is observed. An upper limit of 59 fb is set, at the 95% confidence level, on the cross section for Standard Model HHH production.

Fewell, M.P., Gallagher, J., Grant, C.M., Green, M.J., Jackson, P., Kong, A.X.Y., et al. (2025). Search for triple Higgs boson production in the 6b final state using pp collisions at √s=13 TeV with the ATLAS detector. PHYSICAL REVIEW D, 111(3) [10.1103/PhysRevD.111.032006].

Search for triple Higgs boson production in the 6b final state using pp collisions at √s=13 TeV with the ATLAS detector

Cerri A.;
2025-01-01

Abstract

A search for the production of three Higgs bosons (HHH) in the b (b) over barb (b) over barb (b) over bar final state is presented. The search uses 126 fb(-1) of proton-proton collision data at root s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant production of HHH. The resonant interpretations primarily consider a cascade decay topology of X -> SH -> HHH with masses of the new scalars X and S up to 1.5 and 1 TeV, respectively. In addition to scenarios where S is off-shell, the nonresonant interpretation includes a search for Standard Model HHH production, with limits on the trilinear and quartic Higgs self-coupling set. No evidence for HHH production is observed. An upper limit of 59 fb is set, at the 95% confidence level, on the cross section for Standard Model HHH production.
2025
Fewell, M.P., Gallagher, J., Grant, C.M., Green, M.J., Jackson, P., Kong, A.X.Y., et al. (2025). Search for triple Higgs boson production in the 6b final state using pp collisions at √s=13 TeV with the ATLAS detector. PHYSICAL REVIEW D, 111(3) [10.1103/PhysRevD.111.032006].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1317642